diff options
Diffstat (limited to 'arch/alpha/include/asm/thread_info.h')
| -rw-r--r-- | arch/alpha/include/asm/thread_info.h | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/arch/alpha/include/asm/thread_info.h b/arch/alpha/include/asm/thread_info.h index 807d7b9a1860..4a4d00b37986 100644 --- a/arch/alpha/include/asm/thread_info.h +++ b/arch/alpha/include/asm/thread_info.h @@ -19,7 +19,6 @@ struct thread_info { unsigned int flags; /* low level flags */ unsigned int ieee_state; /* see fpu.h */ - mm_segment_t addr_limit; /* thread address space */ unsigned cpu; /* current CPU */ int preempt_count; /* 0 => preemptable, <0 => BUG */ unsigned int status; /* thread-synchronous flags */ @@ -27,6 +26,7 @@ struct thread_info { int bpt_nsaved; unsigned long bpt_addr[2]; /* breakpoint handling */ unsigned int bpt_insn[2]; + unsigned long fp[32]; }; /* @@ -35,7 +35,6 @@ struct thread_info { #define INIT_THREAD_INFO(tsk) \ { \ .task = &tsk, \ - .addr_limit = KERNEL_DS, \ .preempt_count = INIT_PREEMPT_COUNT, \ } @@ -43,6 +42,8 @@ struct thread_info { register struct thread_info *__current_thread_info __asm__("$8"); #define current_thread_info() __current_thread_info +register unsigned long *current_stack_pointer __asm__ ("$30"); + #endif /* __ASSEMBLY__ */ /* Thread information allocation. */ @@ -62,6 +63,7 @@ register struct thread_info *__current_thread_info __asm__("$8"); #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_SYSCALL_AUDIT 4 /* syscall audit active */ +#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */ #define TIF_DIE_IF_KERNEL 9 /* dik recursion lock */ #define TIF_MEMDIE 13 /* is terminating due to OOM killer */ #define TIF_POLLING_NRFLAG 14 /* idle is polling for TIF_NEED_RESCHED */ @@ -71,20 +73,20 @@ register struct thread_info *__current_thread_info __asm__("$8"); #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) +#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) /* Work to do on interrupt/exception return. */ #define _TIF_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \ - _TIF_NOTIFY_RESUME) - -/* Work to do on any return to userspace. */ -#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK \ - | _TIF_SYSCALL_TRACE) + _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL) #define TS_UAC_NOPRINT 0x0001 /* ! Preserve the following three */ #define TS_UAC_NOFIX 0x0002 /* ! flags as they match */ #define TS_UAC_SIGBUS 0x0004 /* ! userspace part of 'osf_sysinfo' */ +#define TS_SAVED_FP 0x0008 +#define TS_RESTORE_FP 0x0010 + #define SET_UNALIGN_CTL(task,value) ({ \ __u32 status = task_thread_info(task)->status & ~UAC_BITMASK; \ if (value & PR_UNALIGN_NOPRINT) \ @@ -108,5 +110,17 @@ register struct thread_info *__current_thread_info __asm__("$8"); put_user(res, (int __user *)(value)); \ }) +#ifndef __ASSEMBLY__ +extern void __save_fpu(void); + +static inline void save_fpu(void) +{ + if (!(current_thread_info()->status & TS_SAVED_FP)) { + current_thread_info()->status |= TS_SAVED_FP; + __save_fpu(); + } +} +#endif + #endif /* __KERNEL__ */ #endif /* _ALPHA_THREAD_INFO_H */ |